Class 9.8 (United States / SAE) Material Properties

Material group: Ferrous Alloys / Structural and constructional steels
Country/Standard: United States / SAE

Data updates

Latest Update: -
Total number of updates: 0
Update History:
-

Mechanical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Yield Strength, Rp0.2 650 MPa view details
Tensile Strength 900 MPa view details
Rockwell Hardness (HR) 27 — 36 view details
Vickers Hardness (HV) val1
Full data access requires a free trial. Sign Up Free
view details
Yield Strength, Rp0.2 94.3 ksi view details
Tensile Strength 130.5 ksi view details
Rockwell Hardness (HR) 27 — 36 view details
Vickers Hardness (HV) val1
Full data access requires a free trial. Sign Up Free
view details

Physical Properties

Temperature

0 - 30°C
PROPERTY / VALUE
Modulus of Elasticity 190 — 210 GPa view details
Density 7.67 — 7.86 kg/dm³ view details
Poisson Coefficient 0.27 — 0.3 view details
Modulus of Elasticity 27.6 E+03 — 30.5 E+03 ksi view details
Density 0.277 — 0.284 lb/in³ view details
Poisson Coefficient 0.27 — 0.3 view details

Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
C
VALUE
0.28 – 0.55
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
P
VALUE
≤ 0.048
UNIT
%
CAS NUMBER
7723-14-0
CRITERIA
S
VALUE
≤ 0.058
UNIT
%
CAS NUMBER
7704-34-9

SAE J 1199: 2001 / Mechanical and material requirements for metric externally threaded steel fasteners

Heat Treatments

  • Quenched in oil or water-base quenchant and tempered at a minimum tempering temperature of 410°C.